While Violet is taking an art class in the Netherlands, her friend's father suddenly disappears! The missing mouse is a renowned botanist — and his disappearance is linked to the mysterious black tulip. The Thea Sisters are eager to help find him. It's an adventure through the windmills, flowers and canals of Holland!

Meet the Thea Sisters!

Nicky is always in a good mood when she's outdoors.

Colette is energetic and full of great ideas.

Pamela is a peacemaker who can't stand arguments.

Paulina loves travelling and helping other rodents.

Violet is detail-oriented and always open to new things.

About the Author

Thea Stilton is a special correspondent for The Rodent's Gazette, Mouse Island's most famouse newspaper. A graduate of Mouseford Academy, Ms. Stilton loves traveling and adventures.